Just a question

If I have a programme on a pc loaded via a cd then lost the cd could I still transfer the prog. to another pc and have it fully working?
(I have the programme Family tree maker on my old pc but for the life of me cannot find the cd now I have a new pc) I have tried to copy the folder to the new pc but that didn't work. Is there another way apart from having to buy again?

If I have a programme on a pc loaded via a cd then lost the cd could I still transfer the prog. to another pc and have it fully working? (I have the programme Family tree maker on my old pc but for the life of me cannot find the cd now I have a new pc) I have tried to copy the folder to the new pc but that didn't work. Is there another way apart from having to buy again?